Map case



Patented May 219, 1923.

WILLIAM A. HANsEs, 0F CHICAGO, ILLINoIs,v `Assreivort*To anunMeNALLYiaCo.,-CF

- CHICAGO, ILLINoIsyA` CORPORATION y0F ILI'iINoIs.4

i nnercnsn.'l i

I Application,iiled'JanuaryZ'?, 1922.` Serial No. 532,102.

To all whom t may concern:

'Be it knownthat I, IVILLIAM A. HANsns, a citizen-of the United States, yresiding at 536 South Clark Street, Chicago, inthe that the spring tension in the spring .roller can be easily and quickly changed, ywithout removing the roller from the case. Other features and advantages or' my invention will' appear morefully as I proceed with my specification.

In that form of device: embodying 'th-efeatures of my invention shown inthe accompanying drawings, Figure 1 is aV View in frontelevatio'n of my improved map case, Fig. 2l is a view taken as indicated by the line 2 of Fig. 1, Fig. 3 is a view of the case in end elevation, showing the end having the spring-adjusting mechanism, Fig. 4 is a View simil'a'rjto Fig. 3 showing the parts in an altered position,l and Fig. 5 isa view ktaken as indicated by the line 5 5 ofzFigz 2.

As shown in the drawings, 10 indicates a cylindrical casing provided ywith hooks 11 for supporting the same. The casing is provided with a longitudinal slot 12, through which the mapl moves as-it is wound upon and unwound from the; roller 14 supported Within the casing.y "The casing 10 is provided at one end with a cap 17, provided With'a centrally arranged hole adapted to support the fixed pin 19 in the end of the roller14.

The roller 14 is of the `ordinary spring type Ysuch as is usedfor window shades, maps and the like;A and is provided at one end `with the ordinary pivotpin 19 and at the other end with a flattened pin 21, which is attached to the usual rod within v.the roller 14 carrying a spiral spring. Attached to the pin 21 and lying next to the end of the roller 14 is the ordinarytoothed Wheel 22. Mounted on the end of the roller 14 are the ordinary pivoted pawls 24, adapted to en-y gage with the teeth on the wheel in the usual manner. The construction and operation of the roller itself form no part of the present invention except in combination with other complished.

parts, as-such rollers are :old in thear't. 'In

the'loperationf and use of such rollers in ,con-y nection with mapsor shades, the pin cor-ll responding to 19, which is stationary with z` respect to t-herolleris rotatably supported,

and Vthe iattenedfpin corresponding tol 21.

is held fixed. Rotation of the roller 14`to unwind the map serves to wind up the spring' within the roller, so that when the map Vis released, thisvspring will turn the roller t0- rewind themap unless held by one of the pawls 24. In order to disengage the pawls' 24, `the map is given a slight Vdownward -pull to cause rotation of the roller 1'4 tocause the l y pawls 24 to move outwardly by.V centrifugal p force, whereupon thespring turns the roller to ,wind up the mapin the usual linafnner.-l

In the operation of suchrollerst'he tension of the spring Within theroller is adjusted by rotating the Hattenedpin 21y until the desired tension is obtained. --This 'necessitates' removal of the roller from supports. By 1 the usevof my improved Case,ithe tensiondor` f the spring in the roller may bechanged4 at will without removing `'the same fromthe case.

construction, by means of which thisuisuacprovided with a cap 63havinga centrally.

arrangedA hole. Centrally arranged .with re-` spect to thisho'le-.is an inwardly projecting cup-shaped rotatable, member 64, `.provided Witha centrally-arranged slot 65 adapted.to

accommodate the vflattened pin '2'1 on ,the end ofthe yroller'14. yThis cup-shaped member I will new describe in detail the 'partcula 64 is provided with acircular flange66 lying. 7 v inside vof the :cap 63V and surrounding the centrally loca-ted hole therein.' On the v011th-,r side of the capL 63 is located l.a ring 68, ypros vided with an inwardly turned flange 67.

The flange 67 is provided with tWo out-vy wardlyv extending tongues 71, extending through slots in the cup-shaped member 64 and bentoutwardly against the ange 66 in order to hold the cup-shaped member and y,

ring 68 `to thefcap63. The parts are arranged loosely enough, so that the ring 68 and the cup-shapedl member 64 are free to` rotate in the capv 63. f

-The ring 68 is also providedwitha hinged cover-plate 79, provided with a small'handl'el 80. yWhen this cover-plate is open, it serves as acrank to rotate the cup-shaped member 64. The handle 8O rfurnishes a grip. 'Ihe` cap 63 is provided near its periphery Wit-h a small hole 92 adapted to accommodate the handle 80, When the cover-plate 79 is folded against the end, as shown in Fig. 2. The entry of the handle 80 in the hole 92, also serves to lock the cup-shaped member 64: against rotation in the cap 63.

The operation 01"' the device is as follows. The roller with the map on it is inserted in the case `through either one ot the ends by removing one ot the caps. yThe cap is then put in piace. The caps 17 and 63 tit tightly enough on the ends oi the casing 10, so that they will not retate after once put in place. After the caps are in place, and the pin 19 in the hole 18, and the pin 21 in the slot 65, the member 6e is rotated by means of the handle 8O to give the spring inside of the roller the desired tension. For example, it the map is unwound, and the spring is too loosely adjusted to Wind it up, the cupshaped member G4; may be rotated to turn the flattened pin 21 to increase the tension on the spring Within the roller, as desired. The turning'o'f the cup shaped member 6ft as described will, the map being unwound, result in Windingup the map Without using the spring, thereby leaving it in its condition of tension with the, map unwound. A subsequent ulnvinding of the map will theretore result in tightening ot the spring. It the map is Wound up when the spring is tightened the stick 13 being in contact With the slot 12 Will prevent motion ot the inap and Ythe spring rvill betightened in an obvious manner. Then the proper tension is obtained, the cover 79 is folded over and the handle V8O inserted in the hole 92 to hold the iatte'ne'd pin 21 in' position. ln like manner, it it is desired to loosen thespring tension, the cup-shaped member may be rotated to unwind the map from the roller, to release somel of the tension on the spring.

While I have shown and described certain' embodiments of my invention, it is to be understood that it isca-pable of many modiications. Changes, therefore, in the con-Y struction f and arrangement may be made Without departingA from the spirit and scope of the invention as disclosed in the'appended claims, in Whirh it is my intention to claim all novelty inherent in my invention as broadly as possible in view of the prior art.

lhat 1 claim as new and desire to secure by Letters Patent, is:

' 1. In combination with a spring roller, a support comprisinoa trame, means on the trame :tor rotatabiiy supporting the pivot pin ot the roller which moves with the roller, adjustable means on the trame for supporting the spring holding pin of the roller, and means whereby said last named means may be rotated in either direction tor tension'adjustinent of the spring` ot the roller.

2. in combination with a spring roller, a support comprising a frame, means on the trame for rotatably supporting the pivot 8. In combination with a spring roller, al

case therefor, a cap upon each end ot the case, means upon one of said caps for pivotally supporting the pivotpin of the roller which moves with the roller, means rotatably mounted upon the other cap for supporting he spring holding pin of the roller, and means whereby said last named means may be rotated in either direction for tension adjustment of the roller.

4:. In combination with a spring` roller, a support comprising aV frame; means on the frame for rotatably supporting the pvot pin of the roller which moves With the roller, adjustable means onl the trame for supporting the spring 'holding pin of the roller, means wherebyv said last named means may be rotated for adjustment of the spring ot the roller, and a handle hinged upon said adjusting means having a proj ectionserving as a crank handle whenopen andas a locking means When closed.v y I Witness my hand and seal'this 23rd day ot January, 1922. 4 VILLIAM AGIHANSES. [n.sj'j 

